[    2.395607] ip (276) used greatest stack depth: 12320 bytes left
[  953.331407] blackhole_netdev_xmit(): Dropping skb.
[  953.331477] blackhole_netdev_xmit(): Dropping skb.
[  953.331507] blackhole_netdev_xmit(): Dropping skb.
[  953.331545] blackhole_netdev_xmit(): Dropping skb.
[ 1024.722014] blackhole_netdev_xmit(): Dropping skb.
[ 1024.722065] blackhole_netdev_xmit(): Dropping skb.
[ 1024.722095] blackhole_netdev_xmit(): Dropping skb.
[ 1024.722121] blackhole_netdev_xmit(): Dropping skb.
[ 1039.680949] blackhole_netdev_xmit(): Dropping skb.
[ 1039.681011] blackhole_netdev_xmit(): Dropping skb.
[ 1039.681045] blackhole_netdev_xmit(): Dropping skb.
[ 1039.681085] blackhole_netdev_xmit(): Dropping skb.